Optical and Quantum Electronics最新文献

{"title":"Optical and electrical properties of GaSe thin films prepared by PECVD","authors":"Mikhail Kudryashov,&nbsp;Leonid Mochalov,&nbsp;Ekaterina Slapovskaya,&nbsp;Yuliya Kudryashova,&nbsp;Diana Fukina,&nbsp;Ruslan Kriukov","doi":"10.1007/s11082-024-07905-3","DOIUrl":"10.1007/s11082-024-07905-3","url":null,"abstract":"<div><p>Gallium selenide (GaSe) thin films on sapphire (001) were first prepared by plasma enhanced chemical vapor deposition (PECVD), where high-purity elemental Ga and Se were used as starting materials. The nonequilibrium low-temperature RF discharge plasma (40.68 MHz) at reduced pressure (0.1 Torr) served to initiate chemical transformations. Gradual increase of the plasma discharge power while keeping other process parameters unchanged leads to an insignificant increase of gallium concentration in GaSe films. This results in a decrease in surface roughness and an increase in the value of the optical band gap of the films from 1.65 to 2.10 eV. All films consist of the δ-GaSe phase with average lattice parameters <i>a</i> = 3.77 Å and <i>c</i> = 32.10 Å. There is a tendency to form a texture oriented along the <i>c</i> axis with increasing plasma power. Conductivity of gallium selenide films showed an activation mechanism of charge transport. For the films deposited at 30, 50 and 70 W, the activation energies were about 0.5, 0.1 and 0.04 eV, respectively. The luminescent properties of GaSe thin films were also investigated.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"56 12","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142714564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retraction Note: Quantum communication based cyber security analysis using artificial intelligence with IoMT","authors":"Huimin Han,&nbsp;Jun Yao,&nbsp;Yujun Wu,&nbsp;Yingyan Dou,&nbsp;Jingjuan Fu","doi":"10.1007/s11082-024-07908-0","DOIUrl":"10.1007/s11082-024-07908-0","url":null,"abstract":"","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"56 12","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142694751","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retraction Note: Enhancing sports performance through quantum-based wearable health monitoring data analysis using machine learning","authors":"Feng Du","doi":"10.1007/s11082-024-07911-5","DOIUrl":"10.1007/s11082-024-07911-5","url":null,"abstract":"","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"56 12","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142694797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retraction Note: Quantum photonics based health monitoring system using music data analysis by machine learning models","authors":"Jing Zhu","doi":"10.1007/s11082-024-07877-4","DOIUrl":"10.1007/s11082-024-07877-4","url":null,"abstract":"","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"56 12","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142694796","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring random laser characteristics in core@ shell nano-scatter centers: trends and opportunities","authors":"Noor al-huda A. Abass,&nbsp;Muslim F. Jawad,&nbsp;Adawiya J. Haider,&nbsp;Bakr A. Taha","doi":"10.1007/s11082-024-06881-y","DOIUrl":"10.1007/s11082-024-06881-y","url":null,"abstract":"<div><p>Concise review explores random lasers, utilizing a scattering medium for optical feedback instead of this the conventional optical cavity found in traditional lasers. Random laser generation relies on gain and dispersion for optical feedback and amplification. Among the myriad of complex nanostructures, surface-based nanomaterials are gaining attention. The materials take the form of core@ shell nanostructures, combining individual properties while maintaining distinct characteristics. In the realm of intelligence research, there is a significant emphasis on synthesizing core@ shell nanoparticles (NPS). Noble metals such as Au, Ag, Pt, and Pd serve as core materials, while metal oxide semiconductors like TiO₂, SnO₂, and Cu₂O act as shell materials. This recent development has sparked considerable interest. The unique arrangement and function of the core and shell lead to diverse applications, including comprehensive photovoltaic systems, color-coded solar cells, and more. Furthermore, these core@ shell nanostructures find applications in random lasers, influencing fields such as medicine and technology. The implementation of random lasers extends to medical imaging devices, displays, sensors, and distinctive sign technologies. As researchers continue to explore the intricate characteristics of core@ shell nanostructures, new trends and opportunities are likely to emerge, promising breakthroughs in various scientific and technological domains.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"56 12","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142692023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Exploring the Lie symmetries, conservation laws, bifurcation analysis and dynamical waveform patterns of diverse exact solution to the Klein–Gordan equation","authors":"Tariq Mahmood,&nbsp;Ghadah Alhawael,&nbsp;Sonia Akram,&nbsp;Mati ur Rahman","doi":"10.1007/s11082-024-07814-5","DOIUrl":"10.1007/s11082-024-07814-5","url":null,"abstract":"<div><p>This paper presents a comprehensive analysis of the <span>((1+1))</span>-dimensional Klein-Gordan equation which plays a significant role in various areas of theoretical and applied physics. The main focus of this research centers on several key areas. First, infinitesimal generators of symmetries were found by Lie symmetry invariance analysis. Then, using the adjoint representation, an ideal system was created based on the found Lie vectors. Secondly, by utilizing the analytical approach, namely the modified Sardar sub equation method, we systematically derive various novel soliton solution in the form of dark, bright, periodic, singular, combo, hyperbolic as well as mixed trigonometric. Finally, bifurcation analysis is performed at the system’s fixed points, revealing chaotic behavior when an external force is introduced into the dynamic system. To identify the chaotic characteristics, a range of tools, such as 3D and 2D phase plots, time series, Lyapunov exponents, and multistability analysis, are utilized. Additionally, the sensitivity analysis of the model is examined under different initial conditions. These results enhance the understanding of nonlinear wave phenomena in mathematical physics and hold potential applications across numerous scientific disciplines.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"56 12","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142692017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Determination and understanding of the structural electronic dynamic elastic and optic properties of Li2GaSb and Li3Sb by density functional theory","authors":"Sinem Erden Gulebaglan,&nbsp;Emel Kilit Dogan","doi":"10.1007/s11082-024-07391-7","DOIUrl":"10.1007/s11082-024-07391-7","url":null,"abstract":"<div><p>In this work, the structural, electronic, elastic, optical and dynamic properties of Li₃Sb and Li₂GaSb crystal structures were researched by using the density functional theory applied in Abinit and Quantum Espresso package programs. All calculations in both programs were performed using the Generalized Gradient Approximation as an exchange–correlation function in Kohn–Sham equations. When the structural properties of the crystals were examined, they were found to be in good agreement with other theoretical results. As a result of the calculations related to the electronic properties, it was determined that the Li₃Sb crystal exhibited semiconducting properties and the Li₂GaSb crystal exhibited metallic properties. Then, focusing on the dynamic properties of Li₃Sb and Li₂GaSb crystals, it was concluded that both crystals are dynamically stable. From the calculations made, it was concluded that the stable state did not deteriorate when pressure was applied to the Li₃Sb crystal, but the stable state deteriorated when pressure was applied to the Li₂GaSb crystal from 528 kbar pressure. In addition, the calculations showed that the thermal conductivity of Li₃Sb is higher than that of Li₂GaSb. By calculating the elastic properties, it was found that Li₃Sb is a brittle material while Li₂GaSb is an elastic material. Finally, based on the semiconductor properties of the Li₃Sb crystal, its optical properties were investigated.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"56 12","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142692016","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Intensity features of the general model vortex higher‑order cosh‑Gaussian beam in free space and gradient-index media","authors":"Ahmed Abdulrab Ali Ebrahim,&nbsp;Faroq Saad,&nbsp;Abdelmajid Belafhal","doi":"10.1007/s11082-024-07818-1","DOIUrl":"10.1007/s11082-024-07818-1","url":null,"abstract":"<div><p>In the framework of the generalized Huygens–Fresnel diffraction integral and paraxial approximation theory, the propagation features of the general model vortex higher-order cosh-Gaussian beam (GMvHchGB) in a free space (FS) and a gradient-index medium (GIM) are studied. The analytical formulas of the GMvHchGB propagating through the considered media are derived. According to the derived formulas, some numerical examples of the normalized intensity distributions and corresponding phase structure of the GMvHchGB in both FS and GIM are performed under different parameter conditions during propagation setups. The obtained results show that the beam with higher decentered parameters, the GMvHchGB propagating in FS case cannot maintain its initial shape during the propagation process, whereas the beam propagation in the GIM case will keep the original shape unchanged with a repeated self-focusing along propagation distances. Finally, the numerical results of both intensity and phase distributions demonstrated that the beam order <i>N</i> significantly influences the vortex property of the beam, which enhances the clear importance of the current work.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"56 12","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142692004","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A metamaterial backed hybrid fractal microstrip patch antenna, integrated with an EM lens for non-invasive hyperthermia of skin cancer","authors":"Komalpreet Kaur,&nbsp;Amanpreet Kaur,&nbsp;Arnab Pattanayak,&nbsp;Diptiman Choudhury","doi":"10.1007/s11082-024-07746-0","DOIUrl":"10.1007/s11082-024-07746-0","url":null,"abstract":"<div><p>The manuscript presents the design and development of a Microwave Hyperthermia (MHT) applicator integrated with an Electromagnetic (EM) lens. The purpose of the proposed MHT applicator is to provide non-invasive microwave hyperthermia treatment for skin cancer. The proposed MHT applicator comprises of an EM lens (133.75 × 133.75 mm³) placed ahead of a Hybrid Fractal Microstrip Patch Antenna (HFMA) (30 × 26 × 1.645 mm³), backed by a Meshedgrid-shaped Artificial magnetic Conductor (AMC) (48 × 48 × 3.27 mm³) reflector at an optimal distance of 16 mm The prototype of the HFMA is fabricated on a Rogers (RT5880) substrate and offers an impedance BW of 278 MHz, for a frequency from 2.316 to 2.594 GHz. To improve the front-to-back ratio (FBR) of the proposed HFMA, an EM lens that reduces the beam width and concentrated the energy in the desired direction is integrated with the AMC-backed HFMA. The final MHT applicator configuration provides a 3 dB beam width of 49.6° and a gain of 7.35 dBi at 2.45 GHz. The testing and validation  of the proposed MHT applicator is carried out in a simulation environment using Computer Simulation Technology (CST) Multiphysics for thermal analysis to check the temperature rise in the phantom. An in-vitro sample of skin phantom with a tumor is prepared using chemicals mimicking skin properties is exposed to the EM radiations emitted by the proposed HT applicator excited using a RF signal generator and power amplifier. the temperature rise in the phantom is recorded using optical temperature measurement probe. A temperature rise in the cancer-affected area up to 44 °C (Effective Temperature Area (ETA) 36 × 20 mm²) is observed in the simulation environment for an exposure time of approx. 45 min and in the measurement environment after a span of 25 minuites. A reported Specific Absorption Rate (SAR) value of 10 W/Kg shows that the proposed MHT applicator is safe for human exposure, and also reduces hot spots by enhancing the focus with controlled temperature, thus making the proposed applicator safe for human exposure.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"56 12","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142692005","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Structural, optical, surface topographical and electrical properties of transparent vanadium doped ZnO absorbing layer for photovoltaic application","authors":"Apoorva Katoch,&nbsp;Navneet Kaur,&nbsp;Iqbal Singh,&nbsp;Aman Mahajan,&nbsp;Balraj Singh,&nbsp;Vandana Shinde,&nbsp;Raminder Kaur","doi":"10.1007/s11082-024-07185-x","DOIUrl":"10.1007/s11082-024-07185-x","url":null,"abstract":"<div><p>In the present investigation, vanadium-doped zinc oxide (V: ZnO) thin films were synthesized by the sol-gel dip-coating technique by varying the percentage of V. Raman spectroscopy was used for structural conformation, showing the making of an impurity phase on increasing the V doping whereas, SEM analysis revealed that increasing the vanadium (V) concentration surface gets smoothen. The V incorporation into the ZnO crystal lattice was confirmed by the EDS analysis. The 3-D surface topography and stereometric analysis show the 3-D surface texture parameters that affect the optical and electrical features of the material. The results from experimental measurements suggest that V: ZnO thin films prepared at 3% V had the most suitable surface in terms of roughness, texture, and waviness. UV analysis showed a decrease in E_g value with an increase in the doping percentage, the optical parameters such as absorption and transmission (%) were also analyzed. The electrical properties were studied using I-V measurements from which resistivity for doped ZnO films was found to significantly decrease and increase its current densities. In photovoltaic characteristic evaluation, the efficiency (η) was attributed to variation in the value of J_sc. The C-3 coated PV cells had superior J_SC at 36.70 mA/cm², resulting an increased overall efficiency without changing the open-circuit voltage or fill factor. Thus, 3% doping concentration has a favourable influence on PV cell performance, indicating a possible path for improving energy conversion efficiencyby ~ 11.76% with better stability. This material can be proven as a good coating-absorbing layer for PV cells.</p></div>","PeriodicalId":720,"journal":{"name":"Optical and Quantum Electronics","volume":"56 12","pages":""},"PeriodicalIF":3.3,"publicationDate":"2024-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142691978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}